Can only 'cd' or 'open' into a DAV-enabled collection, unless
'tolerant' option is set.

New --tolerant (or -t) option.

New options interface: 'set', 'unset' commands.

New command line parser:

handles quotes, so you can do "rm 'foo bar'"

backslash literal escaping, so you can do "rm foo\ bar"

and basic globbing on remote filenames. These will only match
against the contents of the current collection, so, for instance,
"../*.html" will not work as intended. Note also that patterns
are never matched against local filenames.